Magnetic ore-separator



(No Model.)

G. G. CROSBY. MAGNETIC ORE SEPARATOR.

No. 495,608. Patented Apr. 18, 1893.

WITNESSES MW @M 7., W@ J Mw o/ A TTOI-TNE).

UNITED STATES PATENT OFFICE.

GEORGE GROSVENOR CROSBY, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE MAGNETIC ORE MILLING COMPANY,

OF WVEST VIRGINIA.

MAGNETIC ORE-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 495,608, dated April 18, 1893. Application filed January 27, 1892. Serial No. 419,379. (No model.)

To all whom it may concern.- H are located two small commutators. h It,

Be it known that I, GEORGE GROSVENOR which are insulated from said shaft by hard CROSBY, a citizen of the United States, and a rubber, vulcanized fiber, or other suitable maresident of New York, in the county of New terial. Attached to the frame is a piece of York and State of New York, have invented vulcanized fiber f to which are secured two a certain new and useful Improved Magnetic brushes which are pressed against the com- Ore-Separator, of which the following is a mutator to convey to the wire around the specification. spokes of the wheel the necessary electrical My invention relates to an improved appacurrent to magnetize said wheel to a sufficient to ratus for separating magnetic from non-magdegree as will hereinafter be described, the netic substances when in a pulverized condicurrent being transmitted from a battery or tion. dynamo Y by means of wires f g. To the The object of the same is to provide a deshaft H is also secured a pulley I through vice which will be more certain and effective which and the belt I, the motion is imparted 15 in its operation of separating the substances to the wheel or drum C. To the frameA are than those now in use and with these ends in also secured hearings in which are journaled view, my invention consists in certain novel the rollers or drums D, E, over which for- I features of construction as hereinafter fully mer and around which latter travels an enddescribed and specifically pointed out in the less belt or apron B, which belt also travels 20 claims. around the magnetized drum or wheel C, and

In the accompanying drawings, Figure 1, is is formed of some non-magnetic material such a sectional view of myimproved device. Fig. as canvas, leather, 850.; upon motion being 2 is an end view, a portion of the drum and imparted to the magnetic wheelC the endless the belt being broken away to show the debelt or carrier B passes over the lower roller 25- tailed construction of several of the parts. D and around the roller E as shown in Fig. 1 Fig. 3 is a view from the opposite end of the of the drawings. For the purpose of preventmachine. ing this belt or carrier from slipping upon the Referring to the drawings A represents a drumor magnetized wheel C, I have formed suitable support or frame of non-magnetic on the latter the lugs or projections 11, adapted 3o material, preferably of wood, having bearings to enter openings formed in the endless apron secured thereto in which is journaled the to receivethe same, which openings if desired shaft H of amagnetic wheel or drum 0. This may receive eyelets or similar devices I) of wheel C is magnetized in any suitable mannon-magnetic metal for the purpose of prener, but in the present case I have shown it venting the tearing or enlargement thereof.

3 5 constructed of two sections, F and G, rigidly Above the belt or carrier B is located ahopsecured together, their adjacent edges being per K, of sufficient size to contain a quantity separated by some suitable insulating or nonof the substance or material to be treated, and magnetic material 11 The spokes of the in the bottom of which is formed an opening, Wheel, or drum C, are wrapped with suitable the size of which may be regulated by any 40 wires, f, g, and where joined to the sections suitable means in order to control or regulate 0 F, G, are carried around for quite a distance the feed of the pulverized substance to the on the under surface thereof for the purpose apron B. of strongly magnetizing said sections. The Below the rollerE and attached to the frame shaft 11 to which the said wheel or drum is is a striker J, pivoted at j and adapted to be 45 secured is fitted in non-magnetic bearing and so engaged by the lugs or projections e, formed 5 has a collar or sleeve f surrounding or inupon the roller E asyto be raised or lowered,

' casing the same to within a short distance of thereby constantly striking the under portion its outer end for the purpose of, preventing or side of the apron B for the purpose of deas far as possible the magnetization of the taching or knocking off any small particles of 5c shaft H. Inside of the frame and on the shaft metal that may adhere to the belt B.

Having thus described the construction of my improved device, I will now set forth its operation. The hopper K having been filled with the substance to be treated, and which is in a pulverized condition, the slot at the bottom thereof is regulated to permit of theproper feed or flow of the substance upon the moving belt or carrier B. This apron or belt traveling around the magnetized drum or wheel 0, brings the substance under the magnetic influence thereof, the result being that the iron, steel or other magnetic particles are thereof, the non-magnetic particles will fall of their own weight (aided by the momentum given them by the movement of the belt), into a bin or receptacle provided for that purpose,

(not shown) as illustrated in Fig.1 of the drawings, the magnetic particles, however,

clinging to the belt as aforesaid, and completely and effectually separating therefrom. If any particles should adhere to the belt, they are dislodged therefrom by means of the striker J beating against the under side of the apron B as before described.

Another source of trouble and a very important one is that if the magnets are slightly overcharged, it enlarges the magnetic field through which the substance passes, and

draws the magnetic particles to the magnets to which they cling and accumulate so rapidly that all the sand, iron and other mate rials are mixed together until it becomes so heavy that the whole mass falls into the receptacle for the non-magnetic particles, thus losing a very large percentage of the iron, or magnetic particles.

In my separator the holding of non-magnetic particles by the magnetized wheel or drum issimply impossible for the reason that as soon as the ore drops from the hopper onto the belt, it is shaken apart by the motion of the belt and by the time that it arrives at the wheel and before it becomes subjected to the influence thereof, the particles, magnetic or non-magnetic, are separated or loosened and free to move, one upon or away from the other; the magnetic particles being held to the belt by the influence of the magnetized wheel or drum, are carried to a point where the belt is so far separated from the magnetized wheel 0 that they fall outside of the magnetic field, whereas, the foreign or non-magnetic particles are free and drop of their own weight as soon as the wheel or drum 0 revolves to a point where they will slide from the apron or 0&1'1161.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machinefor separating magnetic from non-magnetic particles, a magnetized drum or wheel constructed in two sections separated by non-magnetic substance, and having a wire or wires coiled around the spoke or spokes of said wheel or drum, for thepurpose of conducting the'current of electricity to and thus magnetizing the same, in-combination with a pulley, an endless apron passing around the drum and pulley, and a-feeding hopper located over the belt-near said pulley, substantially as described.

2. A machine constructed for the purpose of separating magnetic from non-magnetic substances and provided with a magnetized drum or wheel, constructed of two parts I G, separated byinsulating material and having a spoke or spokes thereof, wrapped with Wire, said wheel being mounted upon an insulated shaft adapted and arranged to convey electricity to and magnetize said drum, in combination with a pulley, an endless apron passing around the drum and pulley, and a feeding hopper located over the belt near said pulley, substantially as described.

3. In a machine for separating magnetic from non-magnetic substances, the combination with a magnetized drum 0, of rollers D, Ean apron B and an arm or beater J, the several parts being constructed and arranged to operate in a manner and for the purpose substantially as described.

Signed at New York, in the county of New York and State of New York, this 25th day of November, A. D. 1891.

GEORGE GrROSVENOR CROSBY.

Witnesses.-

ROBERT DOUGLAS BUCHANAN, RICHARD LIPS. 

